CN115173428B - Management method for demand response - Google Patents

Management method for demand response Download PDF

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CN115173428B
CN115173428B CN202210669809.8A CN202210669809A CN115173428B CN 115173428 B CN115173428 B CN 115173428B CN 202210669809 A CN202210669809 A CN 202210669809A CN 115173428 B CN115173428 B CN 115173428B
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demand response
response
terminal
load
demand
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CN115173428A (en
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唐斌
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Tianna Energy Technology Shanghai Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00004—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the power network being locally controlled
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/001—Methods to deal with contingencies, e.g. abnormalities, faults or failures
    • H02J3/00125—Transmission line or load transient problems, e.g. overvoltage, resonance or self-excitation of inductive loads
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
    • H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)

Abstract

The invention relates to the field of power supply demand sides, in particular to a management method of demand response, which comprises the steps of obtaining the capacity of a damaged power grid; the base line load of the terminal is adjusted downwards according to the damaged capacity and is sent to each demand response terminal; calculating the response load of each terminal and the base line load of each terminal and respectively issuing a demand response item to each protocol user; acquiring data in a database server to respectively send out targeted suggestions to each demand response terminal; and each demand response terminal uploads the data of the corresponding user demand response item to a database server. When the power grid line is damaged, the demand response platform can be controlled to dynamically adjust the terminal baseline load and the terminal response load of each terminal, the demand response items are issued to induce the protocol users to adjust the electric equipment and guide the protocol users to reasonably allocate the electric equipment, and the electricity utilization cost of the protocol users and the electricity transmission cost of a power supply department can be effectively reduced.

Description

Management method for demand response
Technical Field
The invention relates to the field of power supply demand sides, in particular to a management method of demand response.
Background
In recent years, demand response is a powerful means for the power supply department to deploy the power grid. The demand response means that when the price of the wholesale market of electric power rises or the reliability of the system is threatened, after receiving a direct compensation notice of inductive reduction load or an electric power price rising signal sent by a power supply party, an electric power user changes the inherent conventional power consumption mode, and the electric power consumption load in a certain period is reduced or shifted to respond to the electric power supply, so that the stability of the power grid is guaranteed, and the short-term behavior of the rise of the power price is restrained. In practice and operation, demand responses are mostly used for peak clipping and valley filling in a stable operation state of a power grid, for example, a publication number CN110266607a discloses a demand response data scheduling method and device, and the demand response is controlled by sequentially guiding each user by setting priorities. The publication number CN108564303A discloses an event-driven power system demand response method, which utilizes a scheme for various faults to issue a demand response item. Publication No. CN102279572B discloses a "demand response method and a demand response system", which intelligently control each electric device by setting priorities for electric appliances, so as to achieve the purpose of automatically performing a demand response project. Article number 1009-1831 (2010) 02-0008-04 discloses "technical support of demand side response" in which each end consumer is precisely controlled using metering, control and communication techniques to enable a demand response project to operate efficiently. The national standard GB/T37016-2018 'power consumer demand response saving power measurement and verification technical requirement' has detailed regulations on actions and flows of demand response.
The defects of the method and the system during operation are as follows: when the problem of reduction of power grid capacity in different degrees caused by damage of electric wires in different degrees is faced, reasonable demand response items are difficult to issue, so that the electricity utilization cost of agreement users and the transmission cost of a power supply department are reduced, and the demand response platform cannot conduct demand response item guidance on the agreement users, so that the expected target achievement probability of the demand response items is too low.
Disclosure of Invention
Therefore, the invention provides a management method of demand response. The method and the device are used for solving the problem that corresponding demand response items cannot be issued in a targeted manner when the capacity of the power grid is reduced to different degrees so as to reduce the electricity consumption cost of protocol users and the electricity transmission cost of a power supply department, so that the electricity consumption cost and the electricity transmission cost are too high in the prior art.
In order to achieve the above object, the present invention provides a management method for demand response, which comprises the following steps:
the method comprises the following steps of S1, acquiring damaged capacity which can be provided by a power grid after a line is damaged, and sending the damaged capacity to a demand response platform;
s2, the demand response platform adjusts the terminal baseline load P0 of the protocol user according to the damaged capacity and sends the adjusted new terminal baseline load to each demand response terminal corresponding to each protocol user;
s3, the demand response platform calculates the terminal response load and the terminal baseline load of each affiliated demand response terminal according to the new baseline load and respectively issues demand response items to each agreement user in all areas related to the capacity change of the power grid;
s4, the demand response platform acquires corresponding demand response items recorded in a database server to respectively send out targeted suggestions to each demand response terminal;
and S5, when each protocol user completes the allocation of the corresponding equipment, each demand response terminal uploads the demand response period, the incentive mode, the terminal response load and the demand response mode of each corresponding user demand response item to the database server to wait for the next invocation.
Further, after a line damage fault occurs, the demand response platform records the capacity of the power grid in a single period as Q according to the record of the database server Often times And recording the capacity after the power grid is damaged when the line is damaged in the period as Q Decrease in the thickness of the steel Wherein Q is Decrease in the thickness of the steel ＜Q Often times The minimum constant capacity Q 'of the power grid in the period is obtained by the demand response platform based on the data in the database server' Often times And based on the database server, obtaining the minimum necessary capacity Q of the power grid in the period according to the electric equipment which must be continuously operated in the region Must be used Wherein Q is Must be used < Q' often < Q Often times ；
When Q is Decrease in the thickness of the steel ≥Q′ Often times And then, the demand response platform judges that the line in the power grid is damaged and the power grid issues a demand response item in the area, and issues a corresponding preset response total load Q according to the lacked capacity 0 Wherein Q is 0 ＝Q Often times -Q Decrease in the thickness of the steel ；
When Q is Must be used ＜Q Decrease in the thickness of the steel ＜Q′ Often times When the demand response platform judges that the line is damaged in the power grid and the power grid cannot complete the allocation of the lowest demand capacity in the region through demand response, the demand response platform issues a preset response total load Q 1 And a special response time t, wherein Q is set 1 ＝Q Often times -Q′ Often times T is estimated line maintenance time;
when Q is Decrease in the thickness of the steel ＜Q Must be used And when the demand response platform judges that the line is damaged in the power grid and the power grid cannot complete normal tasks, the demand response platform issues a line maintenance notice to each agreement user.
Further, for the ith protocol user, setting i =1,2,3, … …, n, where n is the number of protocol users in the demand response platform, and the demand response platform is configured to receive the request response request messageThe platform responds to the load q of the user according to the protocol iran is a common herb Determining a terminal response load q corresponding to the protocol user i The requirement response platform sets a historical completion result sigma q of each protocol user requirement response item recorded on the basis of the database server i completed And historical terminal response load sigma q of each protocol user demand response item Sound of I And according to sigma q i completed And Σ q Sound of I Calculating the historical completion rate f of each protocol user demand response item i Setting up
Figure GDA0004004387790000031
When the preset response total load is Q0, setting
Figure GDA0004004387790000032
When the preset response total load is Q1, setting
Figure GDA0004004387790000033
Further, when the demand response platform obtains the reduction value of the power grid capacity, the demand response platform calculates Q Decrease in the thickness of the steel And Q Often times And adjusting the terminal baseline load of each protocol user to a corresponding value according to the ratio G, and setting
Figure GDA0004004387790000034
The demand response platform is provided with a baseline correction value alpha, a first preset proportion G1, a second preset proportion G2, a first preset correction coefficient alpha 1 and a second preset correction coefficient alpha 2, wherein G1 < G2 < 1, alpha 2 < alpha 1 < 1, G and alpha satisfy f (G) = alpha and f (G1) = alpha 1,f (G2) = alpha 2,
if G is larger than or equal to G2, the demand response platform selects corresponding alpha from the interval [ alpha 2,1) according to G, adjusts the terminal baseline load by using alpha and releases the terminal baseline load as a new terminal baseline load after adjustment;
if G1 is not more than G and is less than G2, the demand response platform issues a new terminal baseline load according to the corresponding relation that G and alpha are in the interval [ alpha 1, alpha 2);
if G is less than G1, the demand response platform judges that the expected target of the demand response item can not be achieved by adjusting the response load, the base line load, the terminal response load or the terminal base line load, and adds special response time t to the demand response item corresponding to the agreement user as supplement;
when the demand response platform uses alpha to adjust the terminal baseline load, the adjusted new terminal baseline load is marked as P0', and P0' = alpha × P0 is set, wherein P0 is the terminal baseline load before adjustment.
Further, the demand response platform synthesizes data fed back by each demand response terminal, establishes a closable electric equipment library and a load-reducible electric equipment library, and when the capacity of the power grid is reduced due to line damage of the power grid, the demand response platform issues the terminal response load of each demand response terminal to each corresponding demand response terminal according to the closable electric equipment library and the load-reducible electric equipment library in the region;
and when the demand response platform judges that the line is damaged in the power grid and the power grid cannot finish allocation of the lowest demand capacity in the region through demand response, the demand response platform adds the special response time t into each demand response item and sends the special response item to a corresponding protocol user which has the electric equipment capable of being closed under full-load operation and capable of reducing load.
Further, when the demand response platform determines Q Must be used ＜Q Decrease in the thickness of the steel ＜Q′ Often times The demand response platform calculates the Q Decrease in the thickness of the steel And Q' Often times Is set to Δ Q = Q' Often times -Q Decrease in the thickness of the steel A first preset total load difference value delta Q1 and a second preset total load difference value delta Q2 are further arranged in the demand response platform, wherein delta Q1 is smaller than delta Q2;
if delta Q is less than or equal to delta Q1, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, and proposes to close part of the closable electric equipment after response starting so as to maintain the power consumption of the electric equipment which has to be continuously operated, and ends the demand response item after the special response time t;
if delta Q1 is larger than delta Q and is not larger than delta Q2, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, and proposes to close all the closable electric equipment after response starting to maintain the power consumption of the electric equipment which has to be continuously operated, and ends the demand response item after the special response time t;
if delta Q is larger than delta Q2, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, proposes to close all the closable electric equipment after response starting and reduce the power consumption of the electric equipment which needs to be continuously operated, and ends the demand response item after the special response time t.
Further, a single demand response terminal collects the total load, the demand response start and stop time, the terminal response load, the response equipment action, the response subsidy and the response running time of the position of the demand response terminal in a single preset period, and uses the total load P of the protocol user collected by the demand response terminal i And drawing a curve by taking the time T as an axis, and recording the data and the curve by the demand response terminal and uploading the data and the curve to the demand response platform.
Further, when the demand response platform issues the demand response item, a curve A (T) is drawn according to the current state of the power grid, and setting is performed
Figure GDA0004004387790000051
Setting the derivative of A (T)
Figure GDA0004004387790000052
The demand response platform is also provided with a plurality of historical demand response items j, draws a curve B (T) according to data of the historical demand response items, and sets B (T) = P j Setting the derivative of B (T)
Figure GDA0004004387790000053
n, the demand response platform selects B closest to A' in a preset period j ', and B j ' protocol user total load P of corresponding demand response item j The starting and ending time of demand response, the terminal response load, the action of response equipment, the response subsidy, the response running time and the total load P of the protocol user j And the curve drawn by taking the time T as an axis is sent to a corresponding demand response terminal as a suggestion.
Further, the demand response terminal switches the data recording period of each electric device and the demand response terminal from a first time length to a second time length when the demand response item is carried out so as to accurately acquire the response action track of each electric device in the period of the demand response item, wherein the second time length is less than the first time length.
Furthermore, the demand response terminal can add, modify and delete each demand response item issued to the demand response terminal and feed back the item to the demand response platform;
the demand response platform does not adjust after the response subsidy of the demand response item is issued in the demand response item.
Compared with the prior art, the method has the advantages that when the power grid line is damaged, the demand response platform can be controlled to dynamically adjust the terminal baseline load and the terminal response load of each terminal, the demand response items are issued to induce the protocol user to adjust the electric equipment and guide the protocol user to reasonably allocate the electric equipment, and the electricity utilization cost of the protocol user and the electricity transmission cost of a power supply department can be effectively reduced.
Furthermore, the demand response platform judges the state of the power grid line when damaged according to the historical data stored in the database server and classifies the state of the damaged power grid, so that the power consumption cost of the agreement user and the power transmission cost of the power supply department are further reduced while the increase of the power transmission cost caused by overload operation of the damaged power grid is effectively avoided.
Furthermore, the demand response platform performs preliminary evaluation on the protocol users according to historical demand response information, and when a line damage event occurs to the power grid, the demand response platform can issue demand response items to each protocol user according to the preliminary evaluation, so that the problem that the demand response items cannot be completed due to low completion rate of the demand response items of the protocol users is effectively avoided, and meanwhile, the power consumption cost of the protocol users and the power transmission cost of a power supply department are further reduced.
Furthermore, the demand response platform adjusts the baseline load of the agreement user by comparing the current condition of the power grid so as to achieve dynamic control of the demand response project, effectively avoids the problem of low completion rate of the demand response project of the agreement user due to insufficient economic benefit, and further reduces the power transmission cost of a power supply department.
Furthermore, the demand response platform establishes the closable electric equipment library and the load-reducible electric equipment library, and when the power grid capacity is reduced due to circuit damage, the protocol user is guided to carry out a demand response project according to the closable electric equipment library and the load-reducible electric equipment library, so that the problem of low completion rate of the demand response project of the protocol user due to unreasonable distribution of the terminal response load is effectively avoided, and the electricity consumption cost of the protocol user and the electricity transmission cost of a power supply department are further reduced.
Further, the demand response platform judges whether special response time is added in the demand response item according to the difference value between the minimum constant capacity and the damaged capacity of the power grid so as to further reduce the load of the power grid, so that the problem of low completion rate of the demand response item of the agreement user due to insufficient economic benefit is effectively avoided, and meanwhile, the power transmission cost of a power supply department is further reduced.
Furthermore, each demand response terminal uploads the state of the user to the demand response platform in a cycle unit, so that the electricity utilization cost of the agreement user and the electricity transmission cost of the power supply department are further reduced while the change of the economy of the demand response item caused by misjudgment of the data of each demand response terminal by the demand response platform is effectively avoided.
Furthermore, the demand response platform compares the completion process and the completion condition of the historical demand response item with the trend of the demand response item to be performed, and then preferentially sends the historical demand response item to each demand response terminal for guidance, so that the problem of reduction of economic benefit caused by insufficient guidance of the agreement user is effectively solved, and meanwhile, the electricity utilization cost of the agreement user is further reduced.
Furthermore, when the demand response item is carried out, the demand response terminal shortens the data acquisition period of each electric device, effectively avoids the situation that the recorded demand response item completion process is not clear due to the overlong acquisition period, and further reduces the electricity utilization cost of the agreement user.
Furthermore, each demand response item issued to the demand response terminal can be added, modified and deleted by the demand response terminal, the demand response platform cannot be changed after the response subsidy is issued, and therefore the power utilization cost of the agreement user and the power transmission cost of the power supply department are further reduced while the fact that the demand response terminal judges the completion rate of the demand response item of the agreement user wrongly due to the fact that the agreement user cannot select the demand response item is effectively avoided.
Drawings
Fig. 1 is a flowchart of a method for managing demand response according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
Fig. 1 is a flow chart of a management method for demand response according to the present invention. The management method of the demand response comprises the following steps:
the method comprises the following steps that S1, damaged capacity which can be provided by a power grid after a line is damaged is obtained, and the damaged capacity is sent to a demand response platform;
s2, the demand response platform adjusts the terminal baseline load P0 of the protocol user according to the damaged capacity and sends the adjusted new terminal baseline load to each demand response terminal corresponding to each protocol user;
s3, the demand response platform calculates the terminal response load and the terminal baseline load of each affiliated demand response terminal according to the new baseline load and respectively issues demand response items to each agreement user in all areas related to the capacity change of the power grid;
s4, the demand response platform acquires corresponding demand response items recorded in a database server to respectively send out targeted suggestions to each demand response terminal, and each protocol user automatically determines whether to allocate corresponding equipment according to the suggestions or not;
and S5, when each protocol user completes the allocation of the corresponding equipment, each demand response terminal uploads the demand response period, the incentive mode, the terminal response load and the demand response mode of each corresponding user demand response item to the database server to wait for the next invocation.
According to the invention, when the power grid line is damaged, the demand response platform can be controlled to dynamically adjust the terminal baseline load and the terminal response load of each terminal, the demand response item is issued to induce the protocol user to adjust the power utilization equipment and guide the protocol user to reasonably allocate the power utilization equipment, so that the power utilization cost of the protocol user and the power transmission cost of a power supply department are effectively reduced.
Specifically, after a line damage fault occurs, the demand response platform is used for responding to the dataRecording the constant capacity of the power grid in a single period as Q by the library server Often times And recording the capacity after damage provided by the power grid when the line damage occurs in the period as Q Damage to Wherein Q is Decrease in the thickness of the steel ＜Q Often times The minimum constant capacity Q 'of the power grid in the period is obtained by the demand response platform based on the data in the database server' Often times And based on the database server, obtaining the minimum necessary capacity Q of the power grid in the period according to the electric equipment which must be continuously operated in the region Must be used Wherein Q is Must be used ＜Q′ Often times ＜Q Often times ；
When Q is Decrease in the thickness of the steel ≥Q′ Often times And then, the demand response platform judges that the line in the power grid is damaged and the power grid issues a demand response item in the area, and issues a corresponding preset response total load Q according to the lacked capacity 0 Wherein Q is 0 ＝Q Often times -Q Decrease in the thickness of the steel ；
When Q is Must be used ＜Q Decrease in the thickness of the steel ＜Q′ Often times When the demand response platform judges that the line is damaged in the power grid and the power grid cannot complete the allocation of the lowest demand capacity in the region through demand response, the demand response platform issues a preset response total load Q 1 And a special response time t, wherein Q is set 1 ＝Q Often times -Q′ Often times T is estimated line maintenance time;
when Q is Decrease in the thickness of the steel ＜Q Must be used And when the demand response platform judges that the line is damaged in the power grid and the power grid cannot complete normal tasks, the demand response platform issues a line maintenance notice to each agreement user.
The demand response platform can judge the state of the power grid line when the power grid line is damaged according to the historical data stored in the database server and classify the state of the damaged power grid, so that the power consumption cost of a protocol user and the power transmission cost of a power supply department are further reduced while the increase of the power transmission cost caused by overload operation of the damaged power grid is effectively avoided.
Specifically, for the ith instituteThe protocol users are set as i =1,2,3, … …, n, where n is the number of protocol users in the demand response platform, and the demand response platform is configured to set the constant load q of the protocol users according to the constant load q of the protocol users iran is a common herb Determining a terminal response load q corresponding to the protocol user i The demand response platform sets a historical completion result sigma q of each protocol user demand response item recorded based on the database server i completed And historical terminal response load sigma q of each protocol user demand response item Sound of I And according to sigma q i completed And Σ q Sound of I Calculating the historical completion rate f of each protocol user demand response item i Setting up
Figure GDA0004004387790000091
When the preset response total load is Q 0 Time, set up
Figure GDA0004004387790000092
When the preset response total load is Q 1 Time, set up
Figure GDA0004004387790000093
According to the invention, the demand response platform carries out preliminary evaluation on the protocol users according to historical demand response information, and can issue demand response items to each protocol user according to the preliminary evaluation when a line damage event occurs in the power grid, so that the problem that the demand response items cannot be completed due to low completion rate of the demand response items of the protocol users is effectively avoided, and meanwhile, the power consumption cost of the protocol users and the power transmission cost of a power supply department are further reduced.
Specifically, when the demand response platform obtains the reduction value of the power grid capacity, the demand response platform calculates Q Decrease in the thickness of the steel And Q Often times And adjusting the terminal baseline load of each protocol user to a corresponding value according to the ratio G, and setting
Figure GDA0004004387790000094
The demand response platform is provided with a baseline correction value alpha, a first preset proportion G1, a second preset proportion G2, a first preset correction coefficient alpha 1 and a second preset correction coefficient alpha 2, wherein G1 < G2 < 1, alpha 2 < alpha 1 < 1, and G and alpha satisfy f (G) = alpha and f (G1) = alpha 1,f (G2) = alpha 2:
if G is larger than or equal to G2, the demand response platform selects corresponding alpha from the interval [ alpha 2,1) according to G, adjusts the terminal baseline load by using alpha and releases the terminal baseline load as a new terminal baseline load after adjustment;
if G1 is not more than G and is less than G2, the demand response platform issues a new terminal baseline load according to the corresponding relation that G and alpha are in the interval [ alpha 1, alpha 2);
if G is less than G1, the demand response platform judges that the expected target of the demand response item can not be achieved by adjusting the response load, the base line load, the terminal response load or the terminal base line load, and adds special response time t to the demand response item corresponding to the agreement user as supplement;
when the demand response platform uses alpha to adjust the terminal baseline load, the adjusted new terminal baseline load is marked as P0', and P0' = alpha × P0 is set, wherein P0 is the terminal baseline load before adjustment.
The demand response platform adjusts the baseline load of the agreement user by comparing the current condition of the power grid, and can achieve dynamic control on the demand response project, thereby effectively avoiding the problem of low completion rate of the demand response project of the agreement user caused by insufficient economic benefit and further reducing the power transmission cost of a power supply department.
Specifically, the method for managing demand response according to claim 4, wherein the demand response platform integrates data fed back by each demand response terminal, establishes a closable electrical equipment bank and a load-reducible electrical equipment bank, and when a situation that the power grid capacity is reduced due to line damage occurs in the power grid, the demand response platform issues the terminal response load of each demand response terminal to each corresponding demand response terminal according to the closable electrical equipment bank and the load-reducible electrical equipment bank in the current region;
and when the demand response platform judges that the line is damaged in the power grid and the power grid cannot finish allocation of the lowest demand capacity in the region through demand response, the demand response platform adds the special response time t into each demand response item and sends the special response item to a corresponding protocol user which has the electric equipment capable of being closed under full-load operation and capable of reducing load.
According to the demand response platform, the closable electric equipment library and the load-reducible electric equipment library are established, so that when the capacity of the power grid is reduced due to line damage of the power grid, the protocol user can be guided to carry out demand response items according to the closable electric equipment library and the load-reducible electric equipment library, the problem that the completion rate of the demand response items of the protocol user is not high due to unreasonable distribution of the terminal response load is effectively avoided, and the electricity utilization cost of the protocol user and the power transmission cost of a power supply department are further reduced.
Specifically, when the demand response platform determines Q Must be used ＜Q Decrease in the thickness of the steel ＜Q′ Often times The demand response platform calculates the Q Damage to And Q' Often times Δ Q = Q 'is set as the difference Δ Q of (2)' Often times -Q Decrease in the thickness of the steel The demand response platform is also provided with a first preset total load difference value delta Q1 and a second preset total load difference value delta Q2, wherein delta Q1 is less than delta Q2;
if delta Q is less than or equal to delta Q1, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, and proposes to close part of the closable electric equipment after response starting so as to maintain the power consumption of the electric equipment which has to be continuously operated, and ends the demand response item after the special response time t;
if delta Q1 is larger than delta Q and is not larger than delta Q2, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, and proposes to close all the closable electric equipment after response starting to maintain the power consumption of the electric equipment which has to be continuously operated, and ends the demand response item after the special response time t;
if delta Q is larger than delta Q2, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, proposes to close all the closable electric equipment after response starting and reduce the power consumption of the electric equipment which needs to be continuously operated, and ends the demand response item after the special response time t.
The demand response platform can judge whether special response time is added into the demand response project or not according to the difference value between the minimum constant capacity and the damaged capacity of the power grid so as to further reduce the load of the power grid, thereby effectively avoiding the problem of low completion rate of the demand response project of the agreement user caused by insufficient economic benefit and further reducing the power transmission cost of a power supply department.
Specifically, the single demand response terminal collects the total load, the demand response start and stop time, the terminal response load, the response equipment action, the response subsidy and the response running time of the position where the demand response terminal is located in a single preset period, a curve is drawn by taking the total load Pi and the time T of a protocol user collected by the demand response terminal as an axis, and the demand response terminal records the data and the curve and transmits the data and the curve to the demand response platform.
According to the invention, each demand response terminal uploads the state of each corresponding protocol user to the demand response platform by taking a period as a unit, so that the state of each protocol user can be accurately monitored from a time level, a reference is provided for the subsequent loss of a line in a power grid, and meanwhile, the condition that a demand response item which is not in accordance with an expected time node is issued when the line in the power grid is lost is effectively avoided, so that the change of the economy of the demand response item caused by the misjudgment of the data of each demand response terminal by the demand response platform is effectively avoided, and the electricity utilization cost of the protocol users and the electricity transmission cost of a power supply department are further reduced.
Specifically, when the demand response platform issues a demand response item, a curve A (T) is drawn according to the current state of the power grid, and setting is performed
Figure GDA0004004387790000111
Setting the derivative of A (T)
Figure GDA0004004387790000112
The demand response platform is also provided with a plurality of historical demand response items j, draws a curve B (T) according to data of the historical demand response items, and sets B (T) = P j Setting the derivative of B (T)
Figure GDA0004004387790000121
n, the demand response platform selects B closest to A' in a preset period j ' and B j ' protocol user total load P of corresponding demand response item j The starting and ending time of demand response, the terminal response load, the action of response equipment, the response subsidy, the response running time and the total load P of the protocol user j And the curve which is drawn by taking the time T as an axis is used as a suggestion and sent to the corresponding demand response terminal.
The demand response platform can preferentially send the completion process and the completion condition of the historical demand response item to each demand response terminal for guidance after comparing the completion process and the completion condition of the historical demand response item with the trend of the demand response item to be performed, so that the problem of reduction of economic benefit caused by insufficient guidance of the agreement user is effectively solved, and meanwhile, the electricity utilization cost of the agreement user is further reduced.
When a demand response item is carried out, the demand response terminal switches the data recording period of each electric device and the demand response terminal from a first time length to a second time length so as to accurately acquire the response action track of each electric device in the demand response item carrying period. Wherein the second duration is less than the first duration. Specifically, when the demand response item is processed, the demand response terminal shortens a data acquisition period of each electric device and the demand response terminal so as to accurately acquire a response action track of each electric device in the processing period of the demand response item.
When the demand response item is carried out, the demand response terminal can shorten the data acquisition period of each electric equipment, thereby effectively avoiding the unclear completion process of the recorded demand response item caused by the overlong acquisition period and further reducing the electricity utilization cost of the protocol user.
Specifically, the demand response terminal can add, modify and delete each demand response item issued to the demand response terminal and feed back the item to the demand response platform;
the demand response platform can synthesize the terminal response load and the special response time to adjust the response subsidy when issuing the demand response item, and does not adjust after issuing.
According to the invention, the received demand response item is automatically fed back by using the demand response terminal and the relevant data is adjusted by using the demand response platform when the demand response item is issued, so that the condition that the demand response terminal misjudges the completion rate of the demand response item of the agreement user due to the fact that the agreement user cannot select the demand response item can be effectively avoided, and the electricity utilization cost of the agreement user and the electricity transmission cost of a power supply department are further reduced.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A method for managing demand responses, comprising:
the method comprises the following steps of S1, acquiring damaged capacity which can be provided by a power grid after a line is damaged, and sending the damaged capacity to a demand response platform;
s2, the demand response platform adjusts the terminal baseline load P0 of the protocol user according to the damaged capacity and sends the adjusted new terminal baseline load to each demand response terminal corresponding to each protocol user;
s3, the demand response platform calculates the terminal response load and the terminal baseline load of each affiliated demand response terminal according to the new baseline load and respectively issues demand response items to each agreement user in all areas related to the capacity change of the power grid;
s4, the demand response platform acquires corresponding demand response items recorded in a database server to respectively send out targeted suggestions to each demand response terminal;
s5, when each protocol user completes the allocation of the corresponding equipment, each demand response terminal uploads the demand response period, the excitation mode, the terminal response load and the demand response mode of each corresponding user demand response item to the database server to wait for the next call;
after a line damage fault occurs, the demand response platform records the capacity of the power grid in a single period as Q according to the record of the database server Often times And recording the capacity after damage provided by the power grid when the line damage occurs in the period as Q Decrease in the thickness of the steel Wherein Q is Decrease in the thickness of the steel ＜Q Often times The minimum constant capacity Q 'of the power grid in the period is obtained by the demand response platform based on the data in the database server' Often times And based on the database server, obtaining the minimum necessary capacity Q of the power grid in the period according to the electric equipment which must be continuously operated in the region Must be used Wherein Q is Must be used ＜Q′ Often times ＜Q Often times ；
When Q is Decrease in the thickness of the steel ≥Q′ Often times And then, the demand response platform judges that the line in the power grid is damaged and the power grid issues a demand response item in the area, and issues a corresponding preset response total load Q according to the lacked capacity 0 Wherein Q is 0 ＝Q Often times -Q Decrease in the thickness of the steel ；
When Q is Must be used ＜Q Decrease in the thickness of the steel ＜Q′ Often times When the demand response platform judges that the line is damaged in the power grid and the power grid cannot complete the allocation of the lowest demand capacity in the region through demand response, the demand response platform issues a preset response total load Q 1 And a special response time t, wherein Q is set 1 ＝Q Often times -Q′ Often times T is estimated line maintenance time;
when Q is Decrease in the thickness of the steel ＜Q Must be used When the power grid is damaged, the power grid can not finish normal tasks, and the demand response platform issues a line maintenance notice to each agreement user;
setting i =1,2,3, … …, n for the ith protocol user, where n is the number of protocol users in the demand response platform, and the demand response platform sets the load q of the protocol users according to the constant time of the protocol users iran is a common herb Determining a terminal response load q corresponding to the protocol user i The requirement response platform sets a historical completion result sigma q of each protocol user requirement response item recorded on the basis of the database server i completed And historical terminal response load sigma q of each protocol user demand response item Sound of I And according to sigma q i completed And Σ q Sound of I Calculating the historical completion rate f of each protocol user demand response item i Setting up
Figure FDA0004004387780000021
When the preset response total load is Q 0 At the time, set
Figure FDA0004004387780000022
When the preset total response load is Q 1 At the time, set
Figure FDA0004004387780000023
When the demand response platform obtains the reduction value of the power grid capacity, the demand response platform calculates Q Damage to And Q Often times And adjusting the terminal baseline load of each protocol user to a corresponding value according to the ratio G, and setting
Figure FDA0004004387780000024
The demand response platform is provided with a baseline correction value alpha, a first preset proportion G1, a second preset proportion G2, a first preset correction coefficient alpha 1 and a second preset correction coefficient alpha 2, wherein G1 < G2 < 1, alpha 2 < alpha 1 < 1, G and alpha satisfy f (G) = alpha and f (G1) = alpha 1,f (G2) = alpha 2,
if G is larger than or equal to G2, the demand response platform selects corresponding alpha from the interval [ alpha 2,1) according to G, adjusts the terminal baseline load by using alpha and releases the terminal baseline load as a new terminal baseline load after adjustment;
if G1 is not more than G and is less than G2, the demand response platform issues a new terminal baseline load according to the corresponding relation that G and alpha are in the interval [ alpha 1, alpha 2);
if G is less than G1, the demand response platform judges that the expected target of the demand response item can not be achieved by adjusting the response load, the base line load, the terminal response load or the terminal base line load, and adds special response time t to the demand response item corresponding to the agreement user as supplement;
when the demand response platform uses alpha to adjust the terminal baseline load, the adjusted new terminal baseline load is marked as P0', and P0' = alpha multiplied by P0 is set, wherein P0 is the terminal baseline load before adjustment;
the demand response platform synthesizes data fed back by each demand response terminal, establishes a closable electric equipment library and a load-reducible electric equipment library, and when the capacity of the power grid is reduced due to line damage of the power grid, the demand response platform issues the terminal response load of each demand response terminal to each corresponding demand response terminal according to the closable electric equipment library and the load-reducible electric equipment library in the region;
when the demand response platform judges that the line damage occurs in the power grid and the power grid cannot finish allocation of the lowest demand capacity in the region through demand response, the demand response platform adds the special response time t into each demand response item and sends the special response item to a corresponding protocol user which has the electric equipment capable of being closed under full-load operation and capable of reducing load;
when the demand response platform determines Q Must be used <Q Decrease in the thickness of the steel ＜Q′ Often times The demand response platform calculates the Q Decrease in the thickness of the steel And Q' Often times Is set to Δ Q = Q' Often times -Q Damage to The demand response platform is also provided with a first preset total load difference value delta Q1 and a second preset total load difference value delta Q2, wherein the delta Q1 is smaller than the delta Q2;
if the delta Q is less than or equal to the delta Q1, the demand response platform issues a demand response item comprising a terminal response load and a special response time t to the corresponding protocol user, and suggests to close part of the closable electric equipment after the response is started so as to maintain the power consumption of the electric equipment which has to be continuously operated, and the demand response item is ended after the special response time t;
if delta Q1 is less than delta Q and less than delta Q2, the demand response platform issues a demand response item comprising terminal response load and special response time t to the corresponding protocol user, and suggests to close all the closable electric equipment after response starting to maintain the power consumption of the electric equipment which must be continuously operated, and to end the demand response item after the special response time t;
if DeltaQ > DeltaQ2, the demand response platform issues a demand response item containing terminal response load and special response time t to the corresponding protocol user, proposes to close all the closable electric equipment after response starting and reduce the power consumption of the electric equipment which needs to be continuously operated, and ends the demand response item after the special response time t.
2. The demand response management method according to claim 1, wherein a single demand response terminal collects, in a single preset period, a total load of a position where the demand response terminal is located, a demand response start-stop time, a terminal response load, a response device action, a response subsidy and a response running time, and uses a total protocol user load P collected by the demand response terminal i And drawing a curve by taking the time T as an axis, and recording the data and the curve by the demand response terminal and uploading the data and the curve to the demand response platform.
3. The method for managing demand response according to claim 2, wherein the demand response platform draws a curve a (T) according to the current state of the power grid when issuing the demand response item, and sets the curve a (T)
Figure FDA0004004387780000041
Setting the derivative of A (T)
Figure FDA0004004387780000042
The demand response platform is also provided with a plurality of historical demand response items j, draws a curve B (T) according to data of the historical demand response items, and sets B (T) = P j Setting the derivative of B (T)
Figure FDA0004004387780000043
The demand response platform selects B closest to A' in a preset period j ', and B j ' protocol user total load P of corresponding demand response item j The starting and ending time of demand response, the terminal response load, the action of response equipment, the response subsidy, the response running time and the total load P of the protocol user j And the curve drawn by taking the time T as an axis is sent to a corresponding demand response terminal as a suggestion.
4. The demand response management method according to claim 3, wherein the demand response terminal switches the data recording period of each of the electric devices and the demand response terminal from a first time length to a second time length when the demand response item is in progress so as to accurately obtain the response action trajectory of each of the electric devices in the progress period of the demand response item, wherein the second time length is shorter than the first time length.
5. The method for managing demand responses according to any one of claims 1 to 4, wherein the demand response terminal is capable of adding, modifying and deleting each demand response item issued to the demand response terminal and feeding back the item to the demand response platform;
the demand response platform does not adjust after the response subsidy of the demand response item is issued in the demand response item.
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